SL182917-XL bearing: complete specifications & equivalents

Specification table

Source: catalog reference (HR1 2026-09-25) · extracted 2026-09-30

Parameters extracted from the official FAG Rolling Bearings catalogue (HR1 2026-09-25); FAG® is a trademark of Schaeffler Technologies AG & Co. KG, used here for identification only — mpnbase is not an authorized FAG/Schaeffler distributor. Boundary dimensions are ISO 15 interchangeable; current production values may differ, verify at schaeffler.com.

Cross references & equivalents

Interchange levels: full standard interchange · partial verify parameters · verify manual confirmation required. Links resolve to the equivalent model's specification page where available.

How the SL182917-XL model number is decoded

envelope 85×120×22 mm with a 17.5 mm radial section; every available circumferential space carries a roller because there is no cage C is 118 kN and C0 159 kN; with a C/C0 ratio of 0.74 the 22 mm-wide full complement concentrates on extreme static and steady radial capacity rather than speed the fatigue load limit Cur is 26 kN, the limiting speed 3,300 r/min and the thermal reference speed 2,200 r/min — full-complement roller-to-roller contact keeps both speeds well below caged cylindrical bearings of the same size the dynamic rating is 1.39 kN per millimetre of the 85 mm bore and 5.36 kN per millimetre of the 22 mm width, figures that explain the use of this bearing in compact, heavily loaded gearbox positions mass is 810 g (0.31 g per mm² of the 120×22 mm envelope); the stiff, thick rings keep raceway deformation low under peak loads with a 85 mm bore this is a heavy-industrial bearing: 810 g of stiff ring and roller set, specified where rigidity matters more than speed In the 120 mm envelope the cageless pack raises C0 to 159 kN; the trade is the 3,300 r/min limiting speed, set by roller-to-roller sliding rather than by a cage The dimension-series digits place this bearing in the SL18 section of the HR1 plan, giving the 17.5 mm section height between the 85 mm bore and the 120 mm outside diameter The -XL suffix is the Schaeffler X-life mark: interchangeable envelope with the basic bearing, but higher load capacity and lower running temperature at the 3,300 r/min limit. Typical applications include vibrating and oscillating machinery, heavy industrial gearbox shafts and rope drums and winch drums, where the 120 mm outside diameter and 118 kN dynamic rating match the duty. In vibrating and oscillating machinery the unit fits a compact 85 mm seat, and in heavy industrial gearbox shafts the 810 g mass suits the compact, space-optimised housing. Designers also specify it for rope drums and winch drums, relying on the 22 mm width and the published 159 kN static rating. Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease. The split outer ring of SL0149 is joined by retaining rings for handling only; never use those rings as a thrust face in the design.

Typical equipment & failure modes

Selection pitfalls — read before you substitute

• Relubrication paths matter: specify the annular groove/hole executions where access is poor, because the tightly packed rows trap old grease.
• The split outer ring of SL0149 is joined by retaining rings for handling only; never use those rings as a thrust face in the design.
• C0 is the number that tempts overload in slow machinery, but fatigue life is still governed by the dynamic C rating and lubricant film.